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EWG's Tap Water Database — 2021 UPDATE

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Toluene

Newhall Cwd-castaic

Toluene is a volatile solvent that harms the nervous and immune systems, damages the liver and may increase the risk of miscarriage and birth defects. Read More.

Toluene is a petroleum-derived chemical found in gasoline and used as a solvent in paints, adhesives and cleaning supplies. Toluene is highly neurotoxic. Exposure can cause fatigue and nausea, and may lead to nervous system disorders.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND30ND
2017ND30ND
2018ND30ND
2019ND30ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 150 ppb

The EWG Health Guideline of 150 ppb for toluene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 1,000 ppb

The legal limit for toluene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-139590-008-0925ND
2014-02-139590-002-0918ND
2014-02-139590-001-0904ND
2015-02-199590-001-1020ND
2015-02-199590-002-1110ND
2015-02-199590-008-1050ND
2016-02-189590-001-1120ND
2016-02-189590-008-1040ND
2016-02-189590-002-1030ND
2017-02-169590-002-0919ND
2017-02-169590-008-0931ND
2017-11-029590-001-1040ND
2018-04-052104-002-0935ND
2018-04-052104-008-0956ND
2018-04-052104-001-0905ND
2019-04-189590-002-0920ND
2019-04-189590-008-0910ND
2019-04-189590-001-0850ND